CVE-2026-34447
Medium
Description
Open Neural Network Exchange (ONNX) is an open standard for machine learning interoperability. Prior to version 1.21.0, there is a symlink traversal vulnerability in external data loading allows reading files outside the model directory. This issue has been patched in version 1.21.0.
SeverityMedium
CVSS5.5
Exploit probability—
ProductLinuxfoundation Onnx
PublishedApr 1, 2026
First seenApr 1, 2026
Weakness typeCWE-61CWE-61CWE-22Path traversal
How to fix
Update
- linuxfoundation onnx1.21.0 or later
- onnx1.21.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| linuxfoundation onnx | v < 1.21.0 | 1.21.0 |
| onnxPyPI | v < 1.21.0 | 1.21.0 |
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